发布不了提问，看图吧，总是说我违规，这种没有被遮罩层盖住，和弹窗一样
https://blog.csdn.net/weixin_45799605/article/details/103409157?ops_request_misc=&request_id=&biz_id=102&utm_term=%E9%81%AE%E7%BD%A9%E5%B1%82%E6%B2%A1%E6%9C%89%E5%85%A8%E8%A6%86%E7%9B%96%E9%97%AE%E9%A2%98&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduweb~default-0-103409157.142^v68^pc_new_rank,201^v4^add_ask,213^v2^t3_esquery_v3&spm=1018.2226.3001.4187
解决了~给左边的盒子设置了position：fixed
